#10123F#10123F

#10123F is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.084 H 274.8°. Best body text is #FFFFFF at 17.79:1 contrast (WCAG AA passes).

Color values

HEX	#10123F
RGB	rgb(16, 18, 63)
HSL	hsl(237, 59%, 15%)
HSV	hsv(237, 75%, 25%)
CMYK	cmyk(74.6%, 71.4%, 0%, 75.3%)
CIE-LAB	lab(8.14, 16.33, -29.06)
CIE-LCH	lch(8.14, 33.33, 299.34°)
OKLab	oklab(21.48% 0.0071 -0.0838)
OKLCH	oklch(21.48% 0.084 274.8)
XYZ	xyz(1.3269, 0.9015, 4.8058)
Luminance	0.0090 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#10123F #3F3D10

analogous

#10293F #10123F #25103F

triadic

#10123F #3F1012 #123F10

tetradic

#10123F #3F1029 #3F3D10 #103F25

square

#10123F #3F1029 #3F3D10 #103F25

split-complementary

#10123F #3F2510 #293F10

monochromatic

#060718 #060718 #10123F #1C2070 #292EA1

Accessibility & contrast

On white

17.79

#10123F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#10123F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #10123F

17.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##10123F	#FFFFFF	#000000	##FFFFFF
##10123F	1.00	17.79	1.18	17.79
#FFFFFF	17.79	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A40

Deuteranopia (green-blind)

#00163E

Tritanopia (blue-blind)

#001D26

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #10123f;
/* rgb */ color: rgb(16, 18, 63);
/* oklch */ color: oklch(21.5% 0.084 274.8);

Tailwind

colors: {
  custom: {
    50: '#554f74',
    500: '#10123f',
    950: '#000000',
  },
}

SCSS

$custom: #10123f;
$custom-light: #554f74;
$custom-dark: #000000;

JSON

{
  "hex": "#10123f",
  "rgb": {
    "r": 16,
    "g": 18,
    "b": 63
  },
  "hsl": {
    "h": 237.447,
    "s": 59.494,
    "l": 15.49
  },
  "oklch": {
    "l": 0.21475,
    "c": 0.08406,
    "h": 274.8
  },
  "luminance": 0.00902
}

Semantic roles & 50–950 ramp

primary

#10123F

secondary

#797632

accent

#DC45E3

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#030208

muted

#78787B

Preview Lab

Preview with #10123F

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →